update changelog

Changelog.txt

@@ -1,3 +1,7 @@
+Version 2.2.031
+    Fixed bug where en_us locale was being set system-wide (thanks BlvckBytes)
+    Fixed bug where Decimal format would throw exception on non en_us systems (thanks BlvckBytes)
+
 Version 2.2.030
     Fixed bug where rupture task could cause an exception (Thanks Wariorrrr)
     Fixed bug where Smelting permission was needed for Alchemy XP gain

pom.xml

@@ -2,7 +2,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.gmail.nossr50.mcMMO</groupId>
     <artifactId>mcMMO</artifactId>
-    <version>2.2.030</version>
+    <version>2.2.031-SNAPSHOT</version>
     <name>mcMMO</name>
     <url>https://github.com/mcMMO-Dev/mcMMO</url>
     <scm>